Flume安裝和實時讀取HIVE的日誌

一、解壓tar包

二、配置環境變量

1、Flume安裝在Hadoop集羣中

export JAVA_HOME=/usr/lib/jvm/java-6-sun

2、Flume安裝在了Hadoop集羣中，配置HA

#export JAVA_HOME=
還需要把Hadoop中的core-site.xml hdfs-site.xml 拷貝到Flume的conf目錄下。

3、沒有安裝在集羣中

export JAVA_HOME=

還需要把Hadoop中的core-site.xml hdfs-site.xml 拷貝到Flume的conf目錄下。
還需要把Hadoop中相關的jar包拷貝到Flume的lib下。

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三、操作命令

將日誌文件存放在HDFS中的案例

flume-hdfs.properties的配置文件的內容爲：

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.


# The configuration file needs to define the sources, 
# the channels and the sinks.
# Sources, channels and sinks are defined per a1, 
# in this case called 'a1'

a1.sources = s1
a1.channels = c1
a1.sinks = k1

# For each one of the sources, the type is defined
a1.sources.s1.type = exec
a1.sources.s1.command=tail -f /opt/app/hive-0.13.1-cdh5.3.6/logs/hive.log
a1.sources.s1.hdfs.filePrefix


# The channel can be defined as follows.
a1.sources.s1.channels = c1

# Each sink's type must be defined
a1.sinks.k1.type = hdfs
a1.sinks.k1.hdfs.path=/hive/log
a1.sinks.k1.hdfs.filePrefix=hive-log/part/date-%Y-%m-%d
a1.sinks.k1.hdfs.rollSize=102400
a1.sinks.k1.hdfs.rollInterval=0
a1.sinks.k1.hdfs.rollCount=0
a1.sinks.k1.hdfs.useLocalTimeStamp=true


#Specify the channel the sink should use
a1.sinks.k1.channel = c1

# Each channel's type is defined.
a1.channels.c1.type = memory

# Other config values specific to each type of channel(sink or source)
# can be defined as well
# In this case, it specifies the capacity of the memory channel
a1.channels.c1.capacity = 100
#a1.channels.c1.checkpointDir =/opt/datas/flume/file/check
#a1.channels.c1.dataDirs =/opt/datas/flume/file/data

然後在flume中運行下面這段代碼：

 bin/flume-ng agent --conf conf/ --name a1 --conf-file conf/flume-mem.propertities -Dflume.root.logger=INFO,console

最後在HDFS中查看文件：